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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 3. Periodicity / 3.1 The Periodic Table & Periodic Trends / Structured Questions: Paper 2


3.1 The Periodic Table & Periodic Trends

Question 1a

Marks: 1
a)
Define the term first ionisation energy and state what is meant by the term periodicity.
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    Question 1b

    Marks: 1
    b)
    Distinguish between the terms group and period.
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      Question 1c

      Marks: 1
      c)
      State the property that determines the order in which elements are arranged in the periodic table.
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        Question 1d

        Marks: 2
        d)
        State the relationship between the electron arrangement of an element and its group and period in the periodic table.
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          Question 2a

          Marks: 2
          a)

          Explain the following statement.

          The first ionisation energy of potassium is smaller than the first ionisation energy of calcium.

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            Question 2b

            Marks: 2
            b)

            Explain the following statement.

            The first ionisation energy of potassium is larger in value than rubidium

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              Question 2c

              Marks: 3
              c)
              Using section 8 of the data booklet, explain the trend of decreasing electronegativity values of the Group 17 elements from F to I.
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                Question 2d

                Marks: 1
                d)
                Define the term electronegativity.
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                  Question 3a

                  Marks: 1
                  a)
                  Define what is meant by the term electron affinity.
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                    Key Concepts
                    Electron Affinity

                    Question 3b

                    Marks: 1
                    b)
                    State whether first electron affinity is an exothermic or endothermic process.
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                      Key Concepts
                      Electron Affinity

                      Question 3c

                      Marks: 2
                      c)
                      Write an equation, including state symbols, for the first electron affinity of bromine.
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                        Key Concepts
                        Electron Affinity

                        Question 3d

                        Marks: 1
                        d)
                        State whether the first electron affinity of I is more or less exothermic than Br.
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                          Key Concepts
                          Electron Affinity

                          Question 4a

                          Marks: 2
                          a)

                          An element has the following electron configuration.

                          1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4

                          i)
                          State which block of the periodic table the element is in.

                          ii)
                          State how many electrons it has in its outer shell.
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                            Question 4b

                            Marks: 3
                            b)
                            Magnesium can be ionised to form a cation, Mg+.

                            i)
                            Write the electron configuration of an Mg+

                            ii)
                            Define the term ‘first ionisation energy'  in relation to magnesium.

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                              Question 4c

                              Marks: 1
                              c)

                              The periodic table can be divided into blocks.

                              State why are silicon, carbon, oxygen and chlorine all classified as p-block elements.

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                                Question 4d

                                Marks: 2
                                d)
                                This question is about the periodicity of period 3 elements.

                                i)
                                State the trend in atomic radius across period 3.

                                ii)

                                State the general trend in first ionisation energies across period 3.

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                                  Question 5a

                                  Marks: 1
                                  a)

                                  Antimony, Sb, has atomic number 51.

                                  Using section 6 of the data booklet, complete the table to show where antimony is found in the periodic table.

                                  Period

                                  Block

                                     

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                                    Question 5b

                                    Marks: 1
                                    b)

                                    Identify the element that is in the d-block of the periodic table which forms a 3+ ion with the following electron configuration.

                                    [Ar] 3d3

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                                      Question 5c

                                      Marks: 1
                                      c)

                                      Ionisation energies can provide evidence for electron structure.

                                      Write an equation, including state symbols, for the first ionisation energy of chlorine.

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                                        Question 5d

                                        Marks: 1

                                        An element Y has the following six first ionisation energies in kJ mol-1. These are shown in the table below.

                                         

                                        1st 

                                        2nd

                                        3rd

                                        4th

                                        5th

                                        6th

                                        Ionisation energy (kJ mol-1)

                                        577

                                        1820

                                        2740

                                        11 600

                                        14 800

                                        18 400

                                        d)
                                        State what group of the periodic table this element belongs to.
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